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Showing 1 to 20 of 28 for “"Spring discharge"”.
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Evaluation of Spring Discharge for Characterization of Groundwater Flow in Fractured Rock Aquifers: A Case Study from the Blue Ridge Province, VA
… aquifers and flow paths may be responsible for springs and seeps appearing throughout the region. Deep confined aquifers and shallow variably confined aquifers may contribute water to spring outlets, resulting in vastly different water quality and suitability for potable water supplies and stock …
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Uranium-series geochronology and stable isotope analysis of travertine from Soda Dam, New Mexico : a Quaternary record of episodic spring discharge and rivern incision in the Jemez Mountains hydrothermal system
… at least the last 500 ka. Travertine-depositing springs occur in San Diego Canyon, the only surface drainage outlet for the Valles Caldera, along the intersection of the Jemez fault zone (JFZ) and the Jemez River. This travertine-depositing hot spring system is part of the Valles Caldera …
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Water From a Stone: The Limits of the Sustainable Development of the Texas Edwards Aquifer
… Aquifer in south central Texas as the minimum discharges from Comal Springs in New Braunfels, Texas, and San Marcos Springs, in San Marcos, Texas. This conflict is aggravated by periodic droughts that increase the demand for water, while reducing recharge. This research demonstrates that in the …
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Effects of Hurricane Fault Architecture on Groundwater Flow in the Timpoweap Canyon of Southwestern, Utah
… of the Hurricane Fault. Also within the canyon, springs discharge from the damage zone into the Virgin River, providing an ideal natural laboratory for the study of groundwater discharge from a fault zone. The Hurricane fault is an active, steeply dipping, normal fault that is 250 km long, and …
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Delineating contributing areas for karst springs using NEXRAD data and cross-correlation analysis
The use of cross-correlation analysis on spring discharge and precipitation data in karst aquifer basins has been used for many years to develop a conceptual understanding of an aquifer and estimate aquifer properties. However, to this point, the application of these processes has relied on gaged …
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An Investigation of Groundwater Flow in the Vicinity of Patoka Dam, Indiana
… isopach mapping of the Glen Dean Limestone, and spring hydrograph analysis was performed to better understand local groundwater hydrology in the vicinity of the existing water-control structures. Dye-tracing results identified the local flow direction as south to north and the mean dye travel …
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Analyzing a 10-Year Cave Drip Record in James Cave, Virginia: Implications for Storage and Recharge in Shallow Appalachian Karst Systems
… karst aquifers has relied on using patterns of spring discharge to quantify recharge. Spring outlets allow for continuous monitoring of discharge from karst aquifers, making them easily accessible monitoring sites. However, because springs can integrate multiple flow paths, it is difficult to …
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Assessing the contribution and variations of spring discharges to river flows within the Nuwejaars Catchment, Cape Agulhas
… South Africa has not stressed the importance of springs as a water resource and fails to integrate surface water and groundwater as one essential resource functioning interchangeably. The investigation of springs as a water resource is a way of understanding the integrated manner in which …
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Recharge dynamics of a perched phreatic aquifer
… estimates from FMB ranged from 20.3% to 33.6%. Springflows were modeled using a stage-discharge cross-correlation method. Recharge estimates from IHS of these springflows ranged from 59.8% to 72.2% (significantly higher than FMB estimates).;Conventional well-stage hydrographs were corrected for …
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Habitat Modeling of Three Endemic Crayfish Species in the Black River Drainage of Missouri and Arkansas: Factors Affecting Distribution and Abundance
… related to stream size, current velocity, and spring discharge. Orconectes marchandi presence was predicted primarily by dolomite geology and water chemistry metrics, both of which may be related to spring flow volume. Cambarus hubbsi was associated with factors related to stream size and …
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Modeling karst aquifer response to rainfall
A finite-element model (HYDMATCH) uses spring hydrograph discharge data to generate a linear regression relation between fracture conductivity and potential gradient in a karst aquifer system. Rainfall excess in the form of potential energy from sinkhole sub-basins is input to element nodes and …
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Hydrological and biogeochemical cycling along the Greenland ice sheet margin
… water source contributions to the bulk meltwater discharge draining a GrIS outlet glacier. Results illustrate (a) the new application of a naturally occurring radioisotope (radon-222) as a quantitative tracer for waters stored at the glacier bed, and (b) the seasonal evolution of the subglacial …
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Incorporating Recent Geochemical and Isotopic Constraints in Age Dating the Waters of Hot Springs National Park, Arkansas
<p>Mean water age for spring discharge in Hot Springs National Park was calculated as approximately 4,400 years by Bedinger et al (1978) using carbon-14. Their analysis indicated that the water was a mixture of a small portion of cold water that was less than twenty years old with a preponderance …
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Hydrological and biogeochemical cycling along the Greenland ice sheet margin
… water source contributions to the bulk meltwater discharge draining a GrIS outlet glacier. Results illustrate (a) the new application of a naturally occurring radioisotope (radon-222) as a quantitative tracer for waters stored at the glacier bed, and (b) the seasonal evolution of the subglacial …
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MULTIDISCIPLINARY WORK TO DETERMINE HYDROLOGY OF ARID LAND SPRINGS AND HOW SPRING WATERS INFLUENCE WATER QUALITY AND ECOSYSTEM HEALTH FOR DESERT ENVIRONMENTS
… use, drought and climate change. Arid land spring sites are considered hotspots for biodiversity, providing refugia to aquatic habitats during dry seasons. To quantify the importance of desert land springs, this research applied an interdisciplinary approach to assess 78 springs of Cibola …
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Hydrology of a large unstable hillslope at Ebnit, Vorarlberg : identifying dominating processes and structures
… preferential flow and groundwater fluctuations. Spring discharge observations at the toe of the steep slopes are in close relation to groundwater table observations on the moving hillslope body. Evidence of pressure propagation from the steep slopes towards the hillslope body is gathered by …
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A Conceptual Model of Groundwater Flow at the Midway, Utah Fish Hatchery as Constrained by Geochemical, Physical Hydrogeological, and Geophysical Methods
… aquifer being used for fish culture by spring discharge was deemed to be contaminated by whirling disease. An alternative water source may exist in a confined aquifer below this contaminated unconfined aquifer. However, the complex hydrostratigraphy presents a challenge in determining if …
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Evaluating Preferential Recharge in Blue Ridge Aquifer Systems Using Saline Tracers
… transmits precipitation to a downgradient spring. Tracer monitoring was accomplished with differential electrical resistivity, chemical sampling, and physical monitoring of water levels and spring discharge. Tracer concentrations were monitored quantitatively with ion chromatography and …
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